Charles jones



-- (No Model.)

0. JONES. APPARATUS FOR MAINTAINING A SUPPLY OI BOILING WATER 0R STEAM,OR BOTH.

No. 409,360. Patented Aug. 20, 1889.

Imam?" Z%Z7M' N, PETERS. Fhnln'bxrwgnphor, Washington. D. C.

UNITED STATES PATENT OFFICE.

CHARLES JONES, OF TVOODFORD, ASSIGNOR TO JAMES OHILDS, OF LONDON,

ENGLAND.

APPARATUS FOR MAINTAINING A SUPPLY OF BOILING WATER R STEAM, OR BOTH.

SPECIFICATION forming part of Letters Patent No. 409,360, dated August20, 1889. Application filed April 22, 1889. Sen'al No. 308,085- (Nomodel.) Patented in England October 21, 1884, No. 13,952.

To all whom, it may concern.-

Be it known that 1, CHARLES JONES, builder, asubject of the Queen ofGreat Britain, lately residing at 24: Eas tcheap, in the city of London,

but now residing at Maude Villa, Chelmsford Road East, IVoodford,England, have invented certain new and useful Improvements in Apparatusfor Maintaining a Supply of Boiling Vater 0r Steam, or of Both, (for IOwhich I have received Letters Patent in Great Britain, No. 13,952, datedOctober 21, 1884,) of which the following is a specification.

This invention has for its object improvements in apparatus formaintaining a supply I 5 of boiling water or steam, or of both. For manypurposes it is desirable to maintain a supply of boiling water which canbe drawn off whenever required, at a boiling temperature, from a cook ortap at a distance from the boiler in which the water is boiled. In

other cases it is desirable to maintain a continuous supply of steam forheating purposes, or to maintain a supplyboth of boiling water andsteam. To effect these objects, I employ a steam-boiler heated by thecombustion of gas issuing from gas-burners, and I control the supply ofgas to the burners by the pressure within the boiler, so that when thepressure within the boiler has risen to the maximum required the supplyof gas is, for the most part, out off, and so that when thepressure'again falls more gas is allowed to pass to the burners. Thepipe for conveying boiling water to a distance I make to dip down from 35 the upper part of the boiler to a point below the water-level. Thepipe outside the boiler I lead away in any upward direction and surroundby a pipe of larger dimensions, to which steam from the steam-space ofthe boiler can 40 always enter freely, so that water contained in theinner water-tube is always maintained at or about the-boiling-point. Onthe pipe a cook or cocks may be placed to allow of boiling water beingdrawn off from it. In this way any water drawn off from the pipe mustalways be boiling, because the'pipe will always be surrounded by steamat a higher temperature than boiling water, or if not, then the pressurein the boiler would fall and no water could be drawn off from the pipe.

The water-supply to the boiler I effect by a supply-pipe from a cisternat an elevation sufficient to give a pressure of water greater than thepressure within the boiler, and control the admission by a valve actedon by a float.

In cases where a continuous supply of steam is required-as, for example,for heating purposes-I lead oif a steam-pipe from the upper part of theboiler to wherever it may be required to use the steam.

Figure 1 of the drawings is a vertical section of the apparatus, andFig. 2 a section of the valve for supplying gas to the boiler.

A is the boiler, with an arched inner chamber A at the bottom andchimney rising up therefrom, and with tubes 13 passing across thechamber.

0 is a water-supply pipe coming from a cistern Z at an elevationsufficient to give a pressure of water greater than the pressure withinthe boiler.

D is a float carrying a valve D, by which the orifice at the end of thewater-supply pipe can be closed when the boiler is sufficiently filledwith water.

E is a safety-valve loaded to maintain a light pressure in theboiler-say a pressure of from two to four pounds to the inch.

F F are gas-burners below the bottom of the boiler. These burners arepreferably adapted, as shown, for burning a mixture of gas and air.

G is a gas-pipe leading from these burners to the valve II. By thisvalve the supply of gas to the burners is controlled, so that whenever acertain amount of boiling water is drawn off and fresh water is suppliedto the boiler to replace it a full supply of gas is allowed to pass tothe burners, so as quickly to raise the water in the boiler to a boilingtemperature, and then when the pressure has again been raised to thepressure required say two to four pounds to the inch-the supply of gasto the burners is for the most part out 9 5 off and only sufficientallowed to pass to them to maintain the boiler at this pressure.

The valve is carried on the under side of a flexible disk I, whichcloses over the top of a chamber J, to which gas is admitted through agas-supply pipe K. The valve is held away' from the end of the pipe G bythe action of a spring G, so that unless the valve is pressed downward afull supply of gas passes to the burners. The stem of the valve rises upthrough the flexible disk I and rests against the under side of a secondflexible disk L. This disk is fixed across a chamber M, the top of whichis by a pipe M connected to the interior of the boiler. lVhen thepressure on the top of the disk L is sufficient to overcome the actionof the spring G, the valve H closes and no gas passes by it to theburners. Sufficient gas for maintaining a small flame at each burnerthen passes into the pipe G through the small opening G the passagethrough which can be regulated by a screwvalve G.

N is a pipe by which boiling Water can be drawn off from the boiler. Itdips down into the water in the boiler, and, passing out from the top ofthe boiler, rises upward and is furnished with a tap at its upper end.

N is a pipe surrounding the portion of the pipe N which is above theboiler. Its lower end is open to the steam-space at the top of theboiler. The pipe N is therefore always surrounded by steam from theboiler, and the water in it is maintained at a boiling temvalvecontrolling the supply of water to the boiler from the cistern, asupply-pipe extendin g from the boiler and-provided with a drawoff cock,and a steam-jacket for said pipe.

2. The combination, substantially as hereinbefore set forth, of theclosed gas-heated boiler, means for automatically regulating the heat,the pipe N, extending into theboiler and having a draw-off cock at itsupper end, and a pipe of larger diameter than the pipe N surroundingsaid pipe and connected with the boilerto form a steam-jacket for thepipe to keep the water in the pipe at a high temperature.

CHARLES JONES.

\Vitnesses:

JNo. DEAN, W. J. NoRWooD, Both of 17 Graccchurch St, London, E. 0.

